graca was there so we're always around him. ♪ nelson mandela nelson mandela ♪ >> reporter: mandela touched so many, so deeply. this afternoon, we met a young entrepreneur in a shanty town near pretoria. he built his internet cafÉ with his own hands, and despite the desperate poverty here, he's dreaming big. >> twenty years in the future, maybe, i might be another mandela. >> reporter: you can feel it here, at this spontaneous memorial outside his home, mandela's presence in the lives and dreams of so many. and tomorrow, at the unprecedented gathering of presidents and princes and ordinary people, the whole world will say good-bye. diane? >> thank you so much, terry. later on byron pitts will have more on mandela and a powerful moment that shook a racist culture to the core. >>> and from south africa we head now to some strange pictures out of north korea, the mysterious nation has confirmed a shakeup at the very top, a deadly family feud. the unpredictable leader kim jong-un ousted his uncle and mentor who was considered the power player in the shadows. he was being arrested right there d